hat·band /ˈhætˌbænd/ 帽邊的緞帶,服喪時帽子上的黑帶
Hat·band n. A band round the crown of a hat; sometimes, a band of black cloth, crape, etc., worn as a badge of mourning. ◄ ►
hatband n : a band around the crown of a hat just above the brim